#pragma once 
#include<iostream>
#include<string>
#include<unistd.h>
#include<cstring>
#include<sys/types.h>
#include<sys/stat.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<netinet/in.h>
#include"Log.hpp"

enum 
{
    SocketErr = 2,
    BindErr,
    ListenErr
};

const int backlog = 10; 

class Sock 
{
public:
    Sock() {}

    ~Sock() {}

public:
    void Socket()
    {
        sockfd_ = socket(AF_INET, SOCK_STREAM, 0);
        if(sockfd_ <0)
        {
            lg(Fatal, "socket error, %s : %d", strerror(errno), errno); 
            exit(SocketErr); 
        }
    }

    void Bind(uint16_t port)
    {
        struct sockaddr_in local;
        memset(&local, 0, sizeof(local));
        local.sin_family = AF_INET;
        local.sin_port = htons(port);
        local.sin_addr.s_addr = INADDR_ANY;

        if(bind(sockfd_, (struct sockaddr*)&local, sizeof(local)) < 0)
        {
            lg(Fatal, "bind error, %s : %d", strerror(errno), errno);
            exit(BindErr); 
        }
    }

    void Listen()
    {
        if(listen(sockfd_, backlog) < 0)
        {
            lg(Fatal, "listen error, %s : %d", strerror(errno), errno); 
            exit(ListenErr); 
        }
    }

    int Accept(std::string *clientip, uint16_t *clientport)
    {
        struct sockaddr_in peer;
        socklen_t len = sizeof(peer);
        int newfd = accept(sockfd_, (struct sockaddr*)&peer, &len);
        if(newfd < 0)
        {
            lg(Warning, "accept error, %s : %d", strerror(errno), errno);
            return -1; 
        }

       char ipstr[64]; 
       inet_ntop(AF_INET, &peer.sin_addr, ipstr, sizeof(ipstr));
       *clientip = ipstr;
       *clientport = ntohs(peer.sin_port);
       return newfd; 
    }

    bool Connect(const std::string &ip, const uint16_t &port)
    {
        struct sockaddr_in peer;
        memset(&peer, 0, sizeof(peer));
        peer.sin_family = AF_INET;
        peer.sin_port = htons(port);
        inet_pton(AF_INET, ip.c_str(), &(peer.sin_addr));

        int n = connect(sockfd_, (struct sockaddr*)&peer, sizeof(peer));
        if(n == -1)
        {
            std::cerr << "connect to " << ip << ":" << port << "error" << std::endl; 
            return false; 
        }
        return true; 
    }

    void Close()
    {
        close(sockfd_); 
    }

    int Fd()
    {
        return sockfd_; 
    }
private:
    int sockfd_; 
}; 
